The placement level of New Oriental English Primary School is mainly divided according to students' English level and age. Generally speaking, the level of English placement in primary schools can be divided into the following levels:

1. Elementary class: suitable for students with weak English foundation, usually aged between 6 and 8. Mainly teach basic vocabulary, grammar and simple dialogue skills.

2. Intermediate class: It is suitable for students with relatively good English foundation, and their age is generally between 8- 10. On the basis of basic knowledge, further consolidate and expand students' vocabulary and grammar knowledge, and cultivate students' listening, speaking, reading and writing abilities.

3. Advanced class: suitable for students with good English foundation, usually aged between 10- 12. Pay attention to improving students' language expression ability and cultivate students' reading comprehension and writing ability.

It should be noted that different training institutions or schools may be different according to their own teaching concepts and resource allocation, resulting in a slightly different specific division of the placement level. So I suggest you consult a specific training institution or school to get more accurate information.